Home / 280,268.91-386,771.15-159,433.65

Finding the Fourth Proportional to 280,268.91, 386,771.15 and 159,433.65

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Solution

The fourth proportional to 280,268.91, 386,771.15 and 159,433.65 is: 220,018.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,268.91 : 386,771.15 = 159,433.65 : x
  2. Step 2: Convert to fraction form
    280,268.91/386,771.15 = 159,433.65/x
  3. Step 3: Cross multiply
    280,268.91x = 386,771.15 × 159,433.65
  4. Step 4: Simplify right side
    280,268.91x = 61,664,336,557.78
  5. Step 5: Solve for x
    x = 61,664,336,557.78/280,268.91
  6. Step 6: Final answer
    x = 220,018.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.